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Valency

Match the ato...

Question

Match the atomic numbers 4, 14, 8, 15, and 19 with a metal of valency 1.

A

4

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B

14

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C

15

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D

19

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Solution

The correct option is D 19
Atomic no $19$ is potassium with configuration of $2, 8, 8, 1$ so it have valency of $1$ . Also potassium is metal.

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